Results of an analysis of the powering losses in the propulsive system of the barge SEACON are reported together with the results of an inspection trip to examine the SEACON propulsive components while the barge was in drydock. Findings are that engine condition contributed to poor speed performance before engine replacement, and that the inherently low efficiency of the Voith-Schneider propulsors contribute significantly to the losses. A power budget is presented which identifies each loss component.